package huawei;
/*
* @Author: wanghongfucoder
* @Date:   2017-06-28 14:57:00
* @Last Modified by:   wanghongfucoder
* @Last Modified time: 2017-06-28 14:57:52
*/

import java.util.*;
public class Lifangsum{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        while(sc.hasNext()){
            int n=sc.nextInt();
            int start=n*n-n+1;
            for(int i=0;i<n-1;i++){
                System.out.print(start+"+");
                start=start+2;
            }
            System.out.println(start);
        }
    }
}


